request to cancel debit order

I sent a written request to cancel our debit order as our bond payment is being deducted from my husband's salary. My request has not been honoured & this is causing such an inconvenience. 2 staff members namely Byron Tarentaal & Sibongile has dealt with my query however there is nothing forthcoming. So disappointed as both staff members assured me that my case will be resolved. I made x 2 lengthy calls to Standard Bank Home loans, sent x 3 emails.....no words!!!!!